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Reducing ultrafiltration membrane fouling during recycled paper mill wastewater treatment using pretreatment technologies: a comparison between coagulation and Fenton
- Source :
- Journal of Chemical Technology & Biotechnology. 94:804-811
- Publication Year :
- 2018
- Publisher :
- Wiley, 2018.
-
Abstract
- BACKGROUND: Ultrafiltration (UF) technology is efficient in treating wastewater. However, membrane fouling during filtration process affects the performance of UF to a large extent. Pretreatment prior to UF is important for enhancing membrane performance, reducing membrane fouling and extending the membrane lifetime. RESULTS: In this study, two pretreatment technologies, including coagulation and Fenton, were applied individually before UF for treating secondary effluent (SE) from recycled paper mill. Results exhibited that direct membrane filtration got the highest flux loss and worst membrane fouling compared with performances of those conducting pretreatments. Compared to coagulation + UF, Fenton + UF had superior performance in reducing dissolved organics with a COD rejection of 91.81%, and mitigating membrane fouling with a stable flux of 133 J m⁻² h⁻¹. GPC results further showed that Fenton pretreatment degraded macromolecules into smaller organic compounds. In addition, the classical blocking filtration laws were employed to scrutinize the fouling alleviation mechanism of pretreatments. CONCLUSION: Pretreatments prolonged the transition from pore blocking to cake filtration, thereby reducing fouling. Among them, Fenton was a promising pretreatment method prior to UF for treating recycled paper SE. © 2018 Society of Chemical Industry
- Subjects :
- General Chemical Engineering
Ultrafiltration
02 engineering and technology
010501 environmental sciences
01 natural sciences
law.invention
Inorganic Chemistry
law
Waste Management and Disposal
Effluent
Filtration
0105 earth and related environmental sciences
Fouling
Renewable Energy, Sustainability and the Environment
Chemistry
business.industry
Organic Chemistry
Membrane fouling
Paper mill
021001 nanoscience & nanotechnology
Pulp and paper industry
Pollution
Fuel Technology
Membrane
Wastewater
0210 nano-technology
business
Biotechnology
Subjects
Details
- ISSN :
- 02682575
- Volume :
- 94
- Database :
- OpenAIRE
- Journal :
- Journal of Chemical Technology & Biotechnology
- Accession number :
- edsair.doi...........a46496b8c56046e12b78bd4d9fad1bc1